7th Class Science Physical and Chemical Changes Question Bank Physical and Chemical Changes

  • question_answer
    A chemical reaction showing single displacement reaction is:

    A) \[NaCl+AgN{{O}_{3}}\to AgCl+NaN{{O}_{3}}\]

    B) \[{{H}_{2}}S{{O}_{4}}+2NaOH\to N{{a}_{2}}S{{O}_{4}}+2{{H}_{2}}O\]

    C) \[AgN{{O}_{3}}+Cu\to Cu{{(N{{O}_{3}})}_{2}}+2Ag\]

    D) All the above

    E) None of these

    Correct Answer: C


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